Noise Reduction Script

Implementing a feature that helps to filter an audio file by reducing the background noise similar to "Audacity".

Libraries used

Firstly import the following python libraries

• NumPy
• scipy.io.wavfile
• Matplotlib
• Os Save the audio files and your code in the same folder Run the python code

Detailed explanation of method used for "Noise Reduction Script"

• Imported the required libraries (NumPy, scipy.io.wavfile, and Matplotlib)
• Read the input audio file using scipy.io.wavfile library
• Converting the audio file into an array containg all the information of the given audio file and intiallizing the frame value.
• Calculating the first fourier transform of each window of the noisy audio file
• Subtracting the noise spectral mean from input spectral, and istft (Inverse Short-Time Fourier Transform)
• Finally getting an audio file with reduction in the background noise at a much higher extent

Output

Author(s)

Akriti